bus from Nagoya to Shirakawago

Hi
I saw a couple of forum with regards to bus trip from Nagoya to Shirakawago. Some of them is already a couple of years old and some of them the links is missing.

Can I know exactly how can I book a bus trip from Nagoya to Shirakawago ? I cannot read Japaneses website.

Most of the bus trip is going from Nagoya - Takayama - Shirakawago .

But my plan is to go from Nagoya - Shirakawago - Takayama.
I tired to find information on Nagoya - Shirakawago but to no avail.

I don't problem travelling the Shirakawago - Takayama leg.

Thanks in advance.

You can book it online through Willer Express (select "Gifu" as destination). http://willerexpress.com/en/

Here's another website as below:

http://www.meitetsu-bus.co.jp/document/english/explore.pdf